title: A one-dimensional tunable magnetic metamaterial.
abstract: We present experimental data on a one-dimensional super-conducting metamaterial that is tunable over a broad frequency band. The basic building block of this magnetic thin-film medium is a single-junction (rf-) superconducting quantum interference device (SQUID). Due to the nonlinear inductance of such an element, its resonance frequency is tunable in situ by applying a dc magnetic field. We demonstrate that this results in tunable effective parameters of our metamaterial consisting of 54 rf-SQUIDs. In order to obtain the effective magnetic permeability μr,eff from the measured data, we employ a technique that uses only the complex transmission coefficient S₂₁.
authors.forename: S
authors.initials: S
authors.lastname: Butz
authors.forename: P
authors.initials: P
authors.lastname: Jung
authors.forename: L V
authors.initials: LV
authors.lastname: Filippenko
authors.forename: V P
authors.initials: VP
authors.lastname: Koshelets
authors.forename: A V
authors.initials: AV
authors.lastname: Ustinov